Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Threads
Graduate Can any theory of gravity explain Mercury's perihelion without a speed of light limit?
- Reverie
- · Replies 6 ·
Graduate Is the total energy and momentum of a field a four vector?
- jostpuur
- · Replies 32 ·
Graduate On the Notations of Length Contraction and Time Dilation
- NanakiXIII
- · Replies 15 ·
Graduate Length contraction with drift velocity in wire relativity
- Himanshu
- · Replies 3 ·
Graduate Constraints on metric coefficients in General Relativity (GR)
- oldman
- · Replies 2 ·
Graduate How Does Speed Affect Time Dilation in Relativity?
- richnfg
- · Replies 5 ·
Graduate Effect of gravitational potential on energy
- Jonathan Scott
- · Replies 12 ·
Graduate Why Do We Measure Distances in Light Years Despite Time Dilation?
- jacksnap
- · Replies 1 ·
High School If such an object does exists
- EmperorNeo
- · Replies 9 ·
Graduate Magnets (and other things) at the speed of light
- LT07
- · Replies 20 ·
Undergrad Why do particle accelerators have a limit if not from the speed of light?
- pixel01
- · Replies 7 ·
Graduate What are the best free software options for visualizing relativity concepts?
- ehrenfest
- · Replies 5 ·
Graduate Can a spacecraft avoid g-forces using the Alcubierre drive concept?
- MagikRevolver
- · Replies 18 ·
Graduate Relativistic mechanical index of refraction
- Helios
- · Replies 2 ·
High School Understanding Light: Frequency vs Wavelength in Different Mediums
- informtohagrid
- · Replies 8 ·
Undergrad Where does the 1/2 go in E=mc² compared to 1/2mc²?
- informtohagrid
- · Replies 9 ·
Graduate Speed of light - can it be exceeded?
- AzureNight
- · Replies 26 ·
Graduate Calculating Relativistic Rocket Performance
- trilex1
- · Replies 4 ·
Undergrad How can time be slowed down in relativity?
- multiverse93
- · Replies 11 ·
Undergrad Light vs Light: What Does it Look Like?
- Alex48674
- · Replies 5 ·
Undergrad Information traveling faster than light?
- Joza
- · Replies 5 ·
Graduate Differential Geometry/Topology in GR: Research Needed?
- andytoh
- · Replies 1 ·
Graduate Alternative definition of Christoffel coefficients
- CPL.Luke
- · Replies 6 ·
Graduate How to Prove Lorentz Invariance of Volume Element in Momentum Space?
- Leeds student
- · Replies 14 ·
Graduate Can we slow down a photon's velocity to 0?
- Skhandelwal
- · Replies 8 ·
Graduate Inertial dependence upon local matter
- yogi
- · Replies 7 ·
Undergrad How to explain special and general relativity to non-scientists
- Mattara
- · Replies 35 ·
Graduate Understanding SR/GR: Tips and Tricks for Intuitive Comprehension
- BosonJaw
- · Replies 3 ·
Graduate Relative speed of tachyons greater than c?
- menager31
- · Replies 12 ·
Graduate What would happen if a spinning space station reached the speed of light?
- BulletRide
- · Replies 4 ·
Graduate Is the Spacetime Interval Truly Invariant Across Different Reference Frames?
- kaotak
- · Replies 17 ·
Graduate Twin Paradox: Why Twin On Ship Ages Slower?
- patl
- · Replies 9 ·
Graduate General newbie questions regarding the speed of light
- newb
- · Replies 6 ·
Graduate Koide and Kodama on relativistic brownian motion
- marcus
- · Replies 1 ·
Graduate Dude, where's my anti-graviton?
- LouisWu
- · Replies 7 ·
Graduate Can Kindergarten STR Math Solve Polchinski's Paradox?
- eigenzeitt
- · Replies 3 ·
Graduate C independent of observer and emitter
- alvaros
- · Replies 7 ·
Graduate How would you observe outside events on a spacecraft?
- Energize
- · Replies 12 ·
Graduate How can we calculate a rest mass?
- Denton
- · Replies 4 ·
Graduate About the Non-paradoxicality of the Twin Paradox
- NanakiXIII
- · Replies 9 ·
Graduate Thought Experiment on ToR postulate-1
- kannank
- · Replies 4 ·
Graduate Schwarzchild solution and orbit precession
- oldman
- · Replies 4 ·
Graduate Gravity and Photon Relationship: Understanding Red and Blue Shift
- journeytospace
- · Replies 5 ·
Graduate How to get inverse Lorentz tranformation from direct Lorentz transformation
- Odyssey
- · Replies 13 ·
Undergrad Difference between inertial and coordinate systems in relativity
- gdpudasaini
- · Replies 3 ·
Graduate High Energy Gamma Rays Go Slower Than the Speed of Light?
- SF
- · Replies 13 ·
Graduate Can SR Postulates 1 and 2 Be Derived from Each Other?
- ivan
- · Replies 7 ·
High School How fast do you have to go before time dilation has an effect?
- afbla
- · Replies 193 ·
High School Does Heating a Battery Affect Its Weight and Energy Storage?
- bassplayer142
- · Replies 3 ·
Graduate What is the physical reality behind metric expansion?
- Robert100
- · Replies 38 ·
Graduate Special Relativity GRE Question
- CreekDog
- · Replies 5 ·
Graduate Special relativity - observing spinning objects
- Mentz114
- · Replies 4 ·
Graduate Michelson- Morley's experiment
- hunarahmad
- · Replies 47 ·
Graduate Reference frames for photon collisions
- hartin
- · Replies 5 ·
Graduate What is the gauge group of general relativity?
- kakarukeys
- · Replies 8 ·
Graduate Gravitational Interaction of Relatively Moving Bodies: Does Aberration Apply?
- oldman
- · Replies 9 ·
Undergrad Why do like charges and poles repel in the long run?
- Denton
- · Replies 3 ·
Graduate Why doesn't a photon have infinite mass and gravity at light speed?
- matteo16
- · Replies 3 ·
Graduate Where does the x-term come from in the Lorentz time transformation?
- kaotak
- · Replies 16 ·
Graduate Relativistic De Broglie Relation
- CoreyJKelly
- · Replies 2 ·
Reforming Society's Perception: The Relativity of Age in Relationships
- animalcroc
- · Replies 7 ·
Graduate Gravitational jerk of two equal masses from rest
- MCarroll
- · Replies 6 ·
Graduate Would Bart on a relativistic skateboard outrun the broadcast to Mars?
- paat
- · Replies 13 ·
Graduate Simple lorentz trans. question
- Ja4Coltrane
- · Replies 5 ·
High School Why do physicists accept wormholes if relativity is the theory?
- gdpudasaini
- · Replies 17 ·
Undergrad Photons and Relativity: A Question of Speed and Time
- admd1
- · Replies 4 ·
Graduate Relativistic Orbits: Can Mass Increase Keep Planets Together?
- Meatbot
- · Replies 2 ·
Graduate Why doesn't DEceleration add mass as well?
- Meatbot
- · Replies 14 ·
Undergrad Electric field and gravitational field
- sterproj
- · Replies 2 ·
Graduate Is there something special about standing on a planet?
- Bob Walance
- · Replies 5 ·
Graduate How Would Gravity Behave with a Four-Component Mass Current as Its Source?
- jostpuur
- · Replies 23 ·
High School What Does "Twin B Being 3 Years Younger" Mean? An Explanation from My Cousin
- Remnant
- · Replies 3 ·
Graduate What Happens to Time on a Moving Vehicle?
- Raul_Duke21
- · Replies 20 ·
Graduate Group velocity and speed of information
- OOO
- · Replies 8 ·
Graduate What kind of a bomb? answer:the exploding kind.
- MathematicalPhysicist
- · Replies 9 ·
Graduate Changing of one of the previous topics
- dasher
- · Replies 8 ·
Graduate Speed of Light vs Refractive Index: Does It Violate Relativity?
- dasher
- · Replies 4 ·
Graduate The runner on the train paradox.
- MathematicalPhysicist
- · Replies 7 ·
Graduate Spacetime - it warps, it curves, but can't expand?
- dilletante
- · Replies 15 ·
Undergrad Why can't a photon exceed the speed of light?
- Holocene
- · Replies 18 ·
Undergrad Does length contraction occur perpendicular to the direction of motion?
- Denton
- · Replies 3 ·
Graduate What Happens to Time When Traveling Near the Speed of Light?
- hamza
- · Replies 47 ·
Graduate Can someone give me a good plausible answer
- Ian
- · Replies 37 ·
Graduate Tensors: Lorentz vs Galilean invariance
- cesiumfrog
- · Replies 1 ·
Graduate Is the Universe a Spiral Cone Leading to a New Big Bang?
- Wonderballs
- · Replies 5 ·
Graduate What is the Meaning of 4-Momenta and How is it Used?
- ManyNames
- · Replies 2 ·
Graduate Is There Physical Significance to Imaginary Dimensions in Space-Time?
- SpitfireAce
- · Replies 45 ·
Undergrad Why do moving electrons generate magnetic fields?
- roger
- · Replies 18 ·
Graduate Electric / magnetic field transformations
- CompuChip
- · Replies 3 ·
Undergrad Modern Physics: Center of Momentum Speed
- Grieverheart
- · Replies 3 ·
Graduate Does light experience distance in its reference frame?
- Cluelessluke
- · Replies 1 ·
Graduate Experimental proofs of increase of mass with v
- alvaros
- · Replies 2 ·
Undergrad Is time a fourth spatial dimension or a physical phenomenon?
- nickto21
- · Replies 12 ·
Graduate What Happens at the Event Horizon of a Black Hole?
- tabchouri
- · Replies 11 ·
Graduate Thought Experiment - Measuring speed of light
- Xori
- · Replies 11 ·
Graduate How Do We Know Gravity Is A Force?
- mkcrow
- · Replies 6 ·
Graduate Variations, Euler-Lagrange, and Stokes
- haushofer
- · Replies 6 ·
Graduate How to normalize the curvature in the Robertson-Walker metric
- Ratzinger
- · Replies 1 ·
Graduate Dr. Robert Forward's curvature gradient detector
- Bob Walance
- · Replies 4 ·
Graduate Does Light Travel Differently in Einstein's Train Experiment?
- DaNiEl!
- · Replies 1 ·